Sustainable foods, is there such a thing?

With our population ever growing, and the environment under more pressure each day, which foods are more sustainable than others?

Let’s take a look, I’m not going to give you the answers now because that would be way too easy, so what do you think?

-Beef, feedlot vs. free range

-Cheese vs. chicken

-Lentils vs. tofu

-Farmed fish vs. Fresh